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A student worked for 20 days. For each of the amount shown in the first row of the table, the second row gives the number of days that the student earned that amout. What is the mean amount of the money that the student earned per day for the 20 days?

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04 Oct 2008, 23:47

I read the responses of everybdy, posted till now !Okay if we go with th equestion and Mean has to calculate, every bdy is right Mean is 79.9 Around $80.

But if we go with the Question title, means calculate the Median. Than arrange all 20 days wages in to the ascending order.Means 48, 48, 70,70,70, 80, 80, 80, 80, 84, 84, 84, 84, 84, 84, 84, 96, 96, 96, 96 So 10th & 11th term is 84 and mean of this is 84. Means Median is 84.

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A student worked for 20 days. For each of the amount shown in the first row of the table, the second row gives the number of days that the student earned that amout. What is the mean amount of the money that the student earned per day for the 20 days?

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05 Oct 2008, 07:49

AmitGUPTA wrote:

I read the responses of everybdy, posted till now !Okay if we go with th equestion and Mean has to calculate, every bdy is right Mean is 79.9 Around $80.

But if we go with the Question title, means calculate the Median. Than arrange all 20 days wages in to the ascending order.Means 48, 48, 70,70,70, 80, 80, 80, 80, 84, 84, 84, 84, 84, 84, 84, 96, 96, 96, 96 So 10th & 11th term is 84 and mean of this is 84. Means Median is 84.

Now its upto question what it asks. Please share the official Answer!

Yes. OA given is $84. THanks. Is it the only way to solve this kind of Q?

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05 Oct 2008, 11:05

Richardson wrote:

Yes. OA given is $84. THanks. Is it the only way to solve this kind of Q?

If the question asked for median, then it is simple. Data given in the question is in the descending order anyways. Now, since there are 20 days, median value will be the average of 10th and 11th day $ amount that is $84. Hence, median will be $84.

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05 Oct 2008, 11:46

scthakur wrote:

Richardson wrote:

Yes. OA given is $84. THanks. Is it the only way to solve this kind of Q?

If the question asked for median, then it is simple. Data given in the question is in the descending order anyways. Now, since there are 20 days, median value will be the average of 10th and 11th day $ amount that is $84. Hence, median will be $84.